//#define _CRT_SECURE_NO_WARNINGS
//#include<stdio.h>
//int main()
//{
//	double money = 0, one = 0;
//	scanf("%lf%lf", &money, &one);
//	double pt1 = money / one;
//	int pt2 = (int)(money / one);
//	if ((pt1 - pt2) >= 0.999)
//		pt2++;
//
//	printf("%d", pt2);
//	return 0;
//}

//#include<stdio.h>
//int main()
//{
//	int a1 = 0, a2 = 0, a3 = 0, a4 = 0;
//	scanf("%d%d%d%d", &a1, &a2, &a3, &a4);
//	printf("AverageΪ(%d+%d+%d+%d)/4=%.2lf", a1, a2, a3, a4, (a1 + a2 + a3 + a4) / 4.0);
//
//	return 0;
//}

//#include<stdio.h>
//int main()
//{
//	double Len = 0, High = 0, x = 0, y = 0, z = 0;
//	scanf("%lf%lf%lf%lf%lf", &Len, &High, &x, &y, &z);
//	double S1 = (y + x) / 2 * High;
//	double S2Tmp = High * Len - S1;
//	double S2 = (Len - x) * High / 4 + (Len - (x + y) / 2) * z / 2;
//	double S3 = S2Tmp - S2;
//	printf("Area of ABEF is %.3lf\nArea of ECGH is %.3lf\nArea of DFHG is %.3lf", S1, S2, S3);
//	return 0;
//}


